Platydoris argo, the redbrown nudibranch or redbrown leathery doris, is a species of dorid nudibranch, a sea slug, in the family Discodorididae.
Distribution This species is known from the Mediterranean Sea and adjacent Atlantic Ocean.Rudman, W.B., 2000 (August 1) Platydoris argo (Linnaeus, 1767). [In] Sea Slug Forum. Australian Museum, Sydney.
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